This research examined the reasons for participation in continuing professional education (CPE) and the predictive relationship of those motivational reasons to the perceived leadership effectiveness of first-line supervisors. For this study, 105 first-line supervisors were surveyed from four electric utility companies. Input was also collected from each supervisor's subordinate employees. Using the five motivational reasons for participation, collected via the Participation Reasons Scale and the effectiveness score collected using the Leader Behavior Analysis II®, regression techniques were used to asses the data. The five participation reasons of the PRS were regressed individually against the effectiveness scores to determine the extent to which leader effectiveness could be predicted by the participation reasons. In each case, the null hypothesis failed to be rejected. Regression of the five PRS reasons collectively on leader effectiveness also failed to reject the null, producing a p value of .800 and an R2 value of .023. An "all possible subsets" regression was conducted to determine whether a smaller subset of the five predictor variables might improve the predictive value of the participation reasons. No subset improved the predictive value. This study concludes that motivation to participate in CPE does not predict leader effectiveness. Thus, training organizations do …